linux-kernel - Re: [PATCH 1/5] 9p: fix ignored return value in v9fs_dir

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Message-ID: <ZFEiOdK0/UxKiPQQ@corigine.com>
Date:   Tue, 2 May 2023 16:46:17 +0200
From:   Simon Horman <simon.horman@...igine.com>
To:     Dominique Martinet <asmadeus@...ewreck.org>
Cc:     Eric Van Hensbergen <ericvh@...il.com>,
        Latchesar Ionkov <lucho@...kov.net>,
        Christian Schoenebeck <linux_oss@...debyte.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, v9fs@...ts.linux.dev,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH 1/5] 9p: fix ignored return value in v9fs_dir_release

On Thu, Apr 27, 2023 at 08:23:34PM +0900, Dominique Martinet wrote:
> retval from filemap_fdatawrite was immediately overwritten by the
> following p9_fid_put: preserve any error in fdatawrite if there
> was any first.
> 
> This fixes the following scan-build warning:
> fs/9p/vfs_dir.c:220:4: warning: Value stored to 'retval' is never read [deadcode.DeadStores]
>                         retval = filemap_fdatawrite(inode->i_mapping);
>                         ^        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Perhaps:

Fixes: 89c58cb395ec ("fs/9p: fix error reporting in v9fs_dir_release")

> Signed-off-by: Dominique Martinet <asmadeus@...ewreck.org>

Reviewed-by: Simon Horman <simon.horman@...igine.com>